The only changes in the power band happen because of reduced pumping losses. I mean, you can increase peak power/cylinder pressure, but nothing about this system makes this a requirement. The increase in torque at less than peak load happens because the pressure difference between the cylinder on the intake stroke and crankcase is minimized. So, less parasitic drag. This is because the cylinder is allowed to "fill up", like a diesel, and this translates into an efficiency gain. The advantage is an engine would operate very much like a diesel, more power at lower engine speeds per CI, better efficiency, but with emissions closer to that of a gasoline vehicle. Another approach to pumping losses is MDS, which can result in up to a 30% increase in efficiency, kill some cylinders, reduce pumping losses, increase efficiency, yadda... And sure, a few companies are developing exhaust based alternators, so there are efficiency gains to be made in plenty of areas.
You can say, or not say, what you like. But telling me that changing the peak cylinder pressure/power/engine speed is going to influence reliability, when this system doesn't change peak cylinder pressure/power/engine speed, just efficiency. Is, uh, I dunno... Odd? Pumping losses make the engine burn more fuel to make the same amount of power compared to an engine that doesn't suffer from them. More fuel usually means more wear, so, a system that minimizes pumping losses, and increases efficiency would mean that the engine doesn't have burn as much fuel to make the same amount of power, and will probably last longer, all things being equal.